Improvement in car-brakes



2 Sheets-Sheet 2..

A. B.ALLEN.

Gar-Brake.

No. 205,987. Patented July 16, 1878.

WITNESSES- AARON BURR ALLEN,

PATENT OFFICE.

OF BARRY, ILLINOIS.

IMPROVEMENT IN CAR-BRAKES.

' Specification forming part of Letters Patent No. 205,987, dated July16, 1878; application filed November 24, 1877.

To all whom it may concern:

Be it known that I, AARON BURR ALLEN, of Barry, in the county of Pikeand State of Illinois, have invented certain new and useful Improvementsin Oar-Brakes; and I do hereby declare that the following is a full,clear, and exact description thereof, which will enable others skilledin the art to which it appertains to make and use the same, referencebein g had to the accompanying drawings, and to letters of referencemarked thereon, which form a part of this specification.

My invention relates to car -brakes; and consists in certainimprovements in the construction of the same, as hereinafter described,the object of this invention being to provide a brake for railway-carswhich shall be self-adjusting and safe in its operation.

In the accompanying drawing, Figure 1 represents, in plan, a part of thebottom of a car and truck provided with my improved brake. Fig. 2 is avertical longitudinal section. Fig. 3 is an end view. Fig. 4 shows thepart termed the brake-arm and the lever connecting with it. Fig. 5represents part of the bumper-rod andconnectin g parts. Fig. 6 shows,insection,

the part termed the brake-head. Fig. 7 illustrates the operation ofcertain parts.

Referring to the drawing, A designates the car-bottom, and B the truck,with wheels 0. 1) indicates the buffer, under which is located thebrake-head E, within a suitable support, to allow it a sliding movement,said brake-head being adjustable, 'and provided with a spring, a, at therear end thereof. When in its usual position, the brake-head extendsabout four inches beyond the buffer D 5 and when the train is extendedor drawn out, one brakehead touches or nearly touches another; but whenthe train closes, as in descending or stopping, one brake-head forcesanother in before the buffers can strike, relieving the cars from theshock of sudden jamming. A bolt, 1), passing through the slot 0 in thebrake-head, limits its adjustment.

F is a brake-arm, which is located under the brake-head E, as shown inFig. 2, and has its rear end coupled to a piy'oted lever, H,

which swings in the stud or hanger G, fixed to the bottom of the car. Asmall spring, d, is fastened to the arm F, to hold it apart from thebrake-head E. The spring 01, however, yields to pressure when the partsE and F are brought into connection by means of the catch 0 on the arm Fand one of the notches f on the brake-head, as hereinafter stated.

Under each car is placed lengthwise a rod, I, extending from end to end,and being loosely supported to allow it a sliding movement. Each end ofthe rod has a head, J, these rods I under the several cars of a trainbeing all on a line, and the heads J coming in contact when the cars arebrought closer together, as when a train is slacking up.

A sliding spool, g, on rod I engages the anchor h, pivoted under thebrake-arm F, as shown, so that when the spool bears against thebifurcated part a: of the anchor the segmental part 2, turning, pressesthe arm F up against the brake-head, so that the projection e catches inone of the notches f, and a connection is formed between E and F as theformer moves back.

The spiral spring g is designed to readjust the spool 9 into positionand holds it steadfast.

The brake-shoes K are connected with the swinging lever 11 by means ofthe bow M and the rods L, N, and N, so as to be brought to the wheels bymovement of the lever.

In Fig. 7 is shown the means of operating the rods I from the engine bymeans of a lever, 0, connecting with rod 1, having a head, J, andlocated on a line with the rods I.

I claim- 1. The rod I, with head J, anchor 74, with bifurcated adjunct.1', spool g, spiral spring y, and brake-arm F, substantially as shown,and for the purpose specified.

2. The adjustable brake-head E, with slot 0 and bolt 1), spring (I, andbrake-arm F, substantially as shown and described.

3. Thebrakearm F, with catch 0 and sprin d, hanger G, swinging lever H,and brakehead E, with notches j, substantially as set forth.

4. The swinging lever H, hanger G, with hraltoarin F, how M, rods L N N,spring (I, In testimony that I claim the foregoing as and shoes K,substantially as sporiticd. my own 1 atlix my signature in presence of5. The buffer 1), brake-howl E, hrakv arln two witnesses.

I, with notch 0 and spring" (I, pivotal lover AARON BU 1R Alililif.

H, hangers (l, and rod 1, with anchor ll, spiral \Vitrwsses:

spring and bifurcated part .1, substantially (TELL HARVEY,

as shown, and for the purpose spovitiml. Ii. MURPHY.

